Spa shell



FIG. 1 is a top plan view of a spa shell showing our new design;

FIG. 2 is a cross-sectional view taken along line 2—2 of FIG. 1;

FIG. 3 is a cross-sectional view taken along line 3—3 of FIG. 1;

FIG. 4 is a first perspective view of a spa shell showing our new design;

FIG. 5 is a second perspective view of a spa shell showing our new design;

FIG. 6 is a third perspective view of a spa shell showing our new design; and,

FIG. 7 is a fourth perspective view of a spa shell showing our new design. 

The ornamental design for a spa shell, as shown and described. 